S
M
T
W
T
F
S
30
82°
73°
31
N/A
1
92°
71°
2
94°
71°
3
93°
72°
4
93°
70°
5
92°
70°
6
88°
66°
7
87°
65°
8
86°
64°
9
84°
61°
10
81°
58°
11
78°
54°
12
78°
56°
13
79°
56°
14
77°
53°
15
81°
59°
16
82°
59°
17
81°
58°
18
82°
60°
19
82°
59°
20
80°
59°
21
81°
60°
22
81°
59°
23
80°
59°
24
81°
58°
25
80°
58°
26
79°
56°
27
80°
57°
28
79°
56°
29
78°
55°
30
78°
56°
1
78°
55°
2
78°
55°
3
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newton
Newton's September 2026 forecast shows daily high temperatures ranging from 77° to 94°, with overnight lows between 53° and 72°. The average high for September is 82° with an average low of 60°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Newton. See also: October | November | December.
